English to Russian Tech/Engineering Computers (general) оплата телефонии

uncommitted/committed billing - с оплатой по нефиксированной/фиксированной ставке?

Оплата пользования решением для веб- и видеоконференций

Uncommitted Price per Minute:

The total number of minutes to be invoiced per session will be the total usage of all Participants
during the session. The usage of each Participant will be rounded up to the nearest minute.

Committed billing:

Committed Charges will be invoiced monthly in advance. This includes, but is not limited to Named Host
Licenses, Active Host, Committed Ports , Committed Minutes and Committed NBR